tasks a-s

Task/Repeat-a-string/Java/repeat-a-string-1.java

@@ -0,0 +1,9 @@
+public static String repeat(String str, int times){
+   StringBuilder ret = new StringBuilder();
+   for(int i = 0;i < times;i++) ret.append(str);
+   return ret.toString();
+}
+
+public static void main(String[] args){
+  System.out.println(repeat("ha", 5));
+}

Task/Repeat-a-string/Java/repeat-a-string-2.java

@@ -0,0 +1,3 @@
+public static String repeat(String str, int times){
+   return new String(new char[times]).replace("\0", str);
+}